[TRNSYS-users] Error in TRNOPT with Parametric Mesh

[David BRADLEY]

Michel,

   This happens when TRNOpt/GenOpt picks some combination of values that 
results in a simulation error. For instance, if you were allowing TRNOpt 
to find a value of specific heat that best fit some data but you did not 
prevent the guessed values of specific heat from being negative then you 
might get this error.

   The *.lst and *.log files (where the error is specified) will be 
located in:

.\TrnsysXX\Optimization\GenOpt\Simulation\tmp-genopt-run-YYY

Either file can be opened with a text editor.

kind regards,

  David


On 01/09/2019 06:28, Michel Tamarzians via TRNSYS-users wrote:
> Hi all,
>
> I am trying to do an optimization for my pv-hydrogen system to find 
> the optimal sizing.
> I wanted to use the Parametric Mesh algorithm, however TRNOPT 
> terminates with the following error:
>
> *Optimization terminated with error.
>
> Error message:
> **************
> java.lang.ClassNotFoundException:
> genopt.algorithm.EquMesh
> Check whether file 'genopt.algorithm.EquMesh.class' is in the correct 
> path.
>
> GenOpt terminated with error.*
>
> Can you perhaps tell me where I have to look to find the correct 
> path?? The strange thing is that the Parametric algorithm works just 
> fine so it should be something with a path issue but I can't manage to 
> figure out where to look.
>
> Any tip/help is appreciated.
> Thanks.
>
> Kind regards,
> Michel Tamarzians
>
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-- 
***************************
David BRADLEY
Principal
Thermal Energy Systems Specialists, LLC
3 North Pinckney Street - suite 202
Madison, WI  53703 USA

P:+1.608.274.2577
F:+1.608.278.1475
d.bradley at tess-inc.com

http://www.tess-inc.com
http://www.trnsys.com

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